"This Powerblanket heated blanket is designed to keep 420-lb. liquid propane and other gas cylinder tanks at their optimal temperatures to maintain optimal pressure, enhance performance and increase efficiency. U.S.A. Closure Type Strap and buckle, Volts 120V, Finish Type Vinyl outer shell, Receptacle Type Required Standard, Amps 4.5, Compatible With 420 lb. cylinder, Dimensions L x W in. 53 x 104, Thermal Cutoff Safety Device Yes, Temperature Range F 80-90 10F, Plug Type 3-prong, Capacity 1 Cylinder, Power Cord ft. 6, Thermostat Included Yes, Common Usage Cylinder warmer, Cylinders qty. 1 420 Lb. cylinder, Watts 548."